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lang-py
df3.to_csv('example.csv', sep=',', index=False).append(), but based on the docs that doens't seem like the right approach.index=has several variables. I now understand that the extra column is the index column from the original dataframe. So I could also.read_csv()withindex=0and that puts theUnnamed:column to the df's index. Right?Unnamed:as a column. Theto_csvmethod will write a numerical index for each row unless you specify it asFalse.